Figure 1.
Inspiratory oxygen fraction (FiO2, A,B) and arterial oxygen saturation (SpO2, C,D) during the first (S1) and the third (S3) sustained or intermittent hypoxia sessions. Data points are means ± SD. Gray areas indicate hypoxic phases. *Significantly different from normoxic baseline in both S1 and S3 (p < 0.05, two-way ANOVA main effect of time).